Or that he ends up like Gary Mitchell or Roger Corby or any of the other numerous Trek nut jobs who try to enforce their will on others...
You give my a psychological test that proves having god like powers means that you will automatically make everyone bow to your will and I will back up your claim. But as it stands, I fail to see how having god like powers automatically makes you an a**hole.
Well since pretty much everyone in Trek with Godlike powers are assholes, I'd say in universe it's pretty safe to say that Riker would become an asshole. As a matter of fact, we see him headed that way towards the end of the episode.
In real life, I know those that have more never think they are superior and know best for those that have less.